ENS 57357
ENS Event | |
|---|---|
15:45 Aug 30, 2024 | |
| Title | Radiography Camera Failure |
| Event Description | The following report was received via email from the California Radiologic Health Branch (RHB),
The Mistras Group's radiography crew was working at a temporary job site (inside a tank) on Friday, August 30, 2024. During the first exposure for the day at 0845 [PDT], the radiographer extended the source assembly and then felt the crank mechanism spin freely, causing the inability to retract the source assembly into the shielded position (a critical component failure). Emergency procedures were implemented; both radiographers extended their controlled radiation area boundary and monitored the area while the radiation safety officer (RSO) was notified at 0852. Source recovery personnel from Mistras Group's Torrance Lab arrived at 1040 to evaluate the situation. A recovery plan was discussed and implemented by the recovery radiographer. He entered the tank, opened the crank assembly, and determined the drive cable was not inside the housing. He opened the exposure side of the crank assembly and saw the end of the drive cable. He was able to retract the source assembly drive cable until the source assembly latched and locked inside the exposure device. This was accomplished at 1105. The RSO made a telephone notification to RHB at 1801 to report the event, but it went to voice mail, so he left his name and phone number. However, the voice mail was not forwarded and the RSO did not follow-up the next week to determine if his voice mail was received. A 30-day written notification of the event, per 10 CFR 34.101 was sent to RHB and received on September 28, 2024. Radiation exposures did not exceed 5 mrem for any involved personnel." California Report Number: 093024 |
| Where | |
|---|---|
| Mistras Group Laguna Beach, California (NRC Region 4) | |
| License number: | 8120-15 |
| Organization: | California Radiation Control Prgm |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+768.32 h32.013 days <br />4.573 weeks <br />1.052 months <br />) | |
| Opened: | Robert Greger 16:04 Oct 1, 2024 |
| NRC Officer: | Brian P. Smith |
| Last Updated: | Oct 1, 2024 |
| 57357 - NRC Website
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Mistras Group with Agreement State | |
WEEKMONTHYEARENS 573572024-08-30T15:45:00030 August 2024 15:45:00
[Table view]Agreement State Radiography Camera Failure ENS 554682021-09-13T07:00:00013 September 2021 07:00:00 Agreement State Radiography Device Malfunction ENS 542582019-08-30T16:30:00030 August 2019 16:30:00 Agreement State Agreement State - Radiography Camera Source Unable to Retract ENS 539702019-04-01T07:00:0001 April 2019 07:00:00 Agreement State Lost Then Found Category 2 Radiography Exposure Device ENS 475912012-01-04T15:30:0004 January 2012 15:30:00 Agreement State Agreement State Report - Radiography Camera Not Properly Secured 2024-08-30T15:45:00 | |